On 2015\01\13 16:40, wrote:

It was singled to get it electrified through the tunnel which would
otherwise have been problematic.

Although I now wonder if it would be possible to triple the Canonbury
Curve, with the outer two third-rail-electrified tracks overlapping with
the central overhead-electrified one.

It's not really an answer here because it
would mean a flat crossing of the North London line.

Indeed.

In article , (Basil Jet)
wrote:

On 2015\01\13 16:40, wrote:

It was singled to get it electrified through the tunnel which would
otherwise have been problematic.

Although I now wonder if it would be possible to triple the Canonbury
Curve, with the outer two third-rail-electrified tracks overlapping
with the central overhead-electrified one.

There's no third rail electrification near to the curve now. The only third
rail lines anywhere near are the East London Line pair of tracks with no
physical connection to the North London Line except the so far never
commissioned "stock transfer" connection some way to the west, at the end of
platform 2 at Highbury and Islington. I suspect connection will never be
commissioned now. They can use the connection at Clapham Junction far more
easily. The East London extension to Highbury was planned before the South
London Line takeover was planned.

--
Colin Rosenstiel

In message ,
d wrote:
Their top speed isn't the issue - its 75mph according to wonkypedia. Its their
acceleration. On the ELL they're so slow off the mark they barely get up to any
decent speed before they have to slow down again for the next stop. I can only
assume the stations on the watford branch are further apart. Either that or we
enter conspiracy theory land and assume there's a deliberate policy on the ELL
to provide a slow service.

Dalston Jn to Surrey Quays is 9 stops in 6.97 km, an average of 0.77 km.

Willesden Jn to Watford Jn is 13 stops in 19.71 km, an average of 1.52
km, almost twice as much.

--
Clive D.W. Feather | Home:
Mobile: +44 7973 377646 | Web: http://www.davros.org
Please reply to the Reply-To address, which is:

On Tue, 13 Jan 2015 11:47:55 -0600
wrote:
In article , d
() wrote:

On Tue, 13 Jan 2015 10:40:34 -0600
wrote:
Well it makes more sense than thousands of people spilling out at
finsbury, shuffling onto the victoria line - which is already seriously
overcrowded there in the rush hour - for one stop then getting off at
highbury when there is an underused freight line - albeit single track
- onto the NLL that could have been used for passenger trains.

It was singled to get it electrified through the tunnel which would
otherwise have been problematic. It's not really an answer here because
it would mean a flat crossing of the North London line.

So? Its not the M25. I've waited at H&I and not seen a train go past
on the NLL for 10 minutes.

ITYF that capacity is already constrained on the NLL, mainly unsatisfied
freight paths.

"Constrained" obviously has a different meaning in railway parlance then.
Even a couple of trains an hour to finsbury would be better than nothing.

--
Spud

On Tue, 13 Jan 2015 23:40:31 +0000
"Clive D. W. Feather" wrote:
In message ,
wrote:
Their top speed isn't the issue - its 75mph according to wonkypedia. Its their
acceleration. On the ELL they're so slow off the mark they barely get up to
any
decent speed before they have to slow down again for the next stop. I can only
assume the stations on the watford branch are further apart. Either that or we
enter conspiracy theory land and assume there's a deliberate policy on the ELL
to provide a slow service.

Dalston Jn to Surrey Quays is 9 stops in 6.97 km, an average of 0.77 km.

Willesden Jn to Watford Jn is 13 stops in 19.71 km, an average of 1.52
km, almost twice as much.

Are you seriously implying that 770m isn't long enough for a modern metro
train to get up to line speed with room to spare? That fact that the 378s can't
manage it says it all about their suitability for the route.

--
Spud

In article ,
(Paul Corfield) wrote:

On Tue, 13 Jan 2015 15:07:07 -0600,
wrote:

There's no third rail electrification near to the curve now. The only
third rail lines anywhere near are the East London Line pair of tracks
with no physical connection to the North London Line except the so far
never commissioned "stock transfer" connection some way to the west, at
the end of platform 2 at Highbury and Islington. I suspect connection
will never be commissioned now. They can use the connection at Clapham
Junction far more easily. The East London extension to Highbury was
planned before the South London Line takeover was planned.

I read something recently that said it is going to be commissioned as
NR had stopped providing completely ludicrous quotes for the work.
Something far more reasonable has been negotiated and TfL want the
work done. No idea of timescale.

Good news then. Hardly a high priority though, unless I'm missing a reason
for regular use.

--
Colin Rosenstiel

In article , d
() wrote:

On Tue, 13 Jan 2015 11:47:55 -0600
wrote:
In article ,
d () wrote:

On Tue, 13 Jan 2015 10:40:34 -0600
wrote:
Well it makes more sense than thousands of people spilling out at
finsbury, shuffling onto the victoria line - which is already
seriously overcrowded there in the rush hour - for one stop then
getting off at highbury when there is an underused freight line -
albeit single track - onto the NLL that could have been used for
passenger trains.

It was singled to get it electrified through the tunnel which would
otherwise have been problematic. It's not really an answer here
because it would mean a flat crossing of the North London line.

So? Its not the M25. I've waited at H&I and not seen a train go past
on the NLL for 10 minutes.

ITYF that capacity is already constrained on the NLL, mainly unsatisfied
freight paths.

"Constrained" obviously has a different meaning in railway parlance then.
Even a couple of trains an hour to finsbury would be better than
nothing.

Constrained in the sense that TfL and the Mayor would like to run a more
frequent North London Line service but isn't being allowed to do so because
of lack of capacity, allowing for the freight paths. The recently changed
layout introduces what are in effect freight loops at Caledonian Road &
Barnsbury but the Canonbury curve is to the east of them.

--
Colin Rosenstiel

On Wed, 14 Jan 2015 05:13:43 -0600
wrote:
In article , d
() wrote:
"Constrained" obviously has a different meaning in railway parlance then.
Even a couple of trains an hour to finsbury would be better than
nothing.

Constrained in the sense that TfL and the Mayor would like to run a more
frequent North London Line service but isn't being allowed to do so because
of lack of capacity, allowing for the freight paths. The recently changed
layout introduces what are in effect freight loops at Caledonian Road &
Barnsbury but the Canonbury curve is to the east of them.

Is it really necessary for freight to use the NLL in the first place? Surely
there must be other routes it can take. Or just do most freight at night with
a limited service in the day.

--
Spud

In article , d ()
wrote:

On Wed, 14 Jan 2015 05:13:43 -0600
wrote:
In article ,
d () wrote:
"Constrained" obviously has a different meaning in railway parlance
then. Even a couple of trains an hour to finsbury would be better than
nothing.

Constrained in the sense that TfL and the Mayor would like to run a more
frequent North London Line service but isn't being allowed to do so
because of lack of capacity, allowing for the freight paths. The recently
changed layout introduces what are in effect freight loops at Caledonian
Road & Barnsbury but the Canonbury curve is to the east of them.

Is it really necessary for freight to use the NLL in the first place?
Surely there must be other routes it can take. Or just do most freight at
night with a limited service in the day.

I thought you knew everything? Obviously not or you would have know about
traffic from the UK's busiest port to its busiest main railway line.

--
Colin Rosenstiel

On Wed, 14 Jan 2015 09:19:35 -0600
wrote:
In article , d ()
wrote:
Is it really necessary for freight to use the NLL in the first place?
Surely there must be other routes it can take. Or just do most freight at
night with a limited service in the day.

I thought you knew everything? Obviously not or you would have know about
traffic from the UK's busiest port to its busiest main railway line.

Sadly I don't have the time nor inclination to review the entire railway route
map of the UK.

--
Spud